My two words: go slow. For all the reasons you described.
My now husband and I have an unusual history I won't go into here, but basically dated in high school and reunited out of the blue when he asked me to lunch summer of 2016. I was 4.5 mo sober and he was 1. That alone raised flags- except for a few major things: we had a very sweet, innocent and completely trustworthy basis from age 15; I was already working a hard AA program and sought a lot of guidance from people ahead of me, spiritual stuff etc; and we paced ourselves in time spent together.
In a nutshell we built a foundation that has turned into a wonderful marriage. Not everyone has this and for your VERY first relationship, all I can emphasize again is go slow, slower and even slower than perhaps you start feeling you want to.
Take care of you first, always.